package service;

public class ServiceCalc {
	public double add(double x, double y){
		return x+y;
	}
	public double sub(double x, double y){
		return x-y;
	}
	public double mul(double x, double y){
		return x*y;
	}
	public double div(double x, double y){
			return x/y;
	}
}
